Machine for use in the manufacture of paper boxes.



A. F. BROOKS.

MACHINE FOR USE IN THE MANUFACTURE OF PAPER BOXES.

APPLICATION FILED JAN. 12. 1916.

1 ,21 2,182. Patented Jan. 16,1917.

5 SHEETS-SHEET 1. ,3 1.

A. F. BROOKS.

MACHINE FOR USE IN THE MANUFACTURE OF PAPER BOXES.

APPLICATION. FILED IAN. I2, I916.

Patented Jan. 16, 1917i 5 SHEETS-SHEET 2.

, A. F. BROOKS. MACHINE FOR USE IN THE MANUFACTURE OF PAPER BOXES.

5 SHEETS-SHEET 3.

A. F. BROOKS.

MACHI NE FOR USE IN THE MANUFACTURE OF PAPER BOXES. APPLICATION FILED JAN-12.1916.

1,212,182. Patented Jan. 16,1917.

A. F. BROOKS. MACHINE FOR USE IN THE MANUFACTURE OF PAPER BOXES.

16, 1917. 5 SH EETS-SHEET 5.

APPLICATION F ILED JAN- 12. I916.

Patented Jan.

/MMM Wm UNITED sTATEs PATENT OFFICE.

AGUS'IUS FREDERICK BROOKS, OF BEDFORD, OHIO, ASSIGNOR TO FREDERICK DAVENPORT, 0F CINCINNATI, OHIO.

MACHINE FOR USE IN THE MANUFACTURE OF PAPER BOXES.

vented certain new and useful Improve ments in Machines for Use in the Manufacture of Paper Boxes, of which the following is a specification.

This invention relates to machines for use A in the manufacture of paper boxes. It is well known that in the manufacture of paper boxes after the blanks are cut to size, scored and the corners cut out; that the flanges .of the covers and boxes are provided by bending or folding toward the body portion of the blanks, the portions of the blanks which extend outwardly around the body portion from the scored lines.

In order tomanufacture perfect paper boxes, that is, to maintain true right angular relation ofall of the flanges with reference to each other and to eliminate the straining and buckling of the flanges along the scored lines which results in forming rounded surfaces between the corners of the boxes and covers, the flange portions of the blanks must be folded over or bent inwardly toward the body portion and in such a close relation thereto, as to result in breaking or relieving the tension of the fiber of i the card board blanks along the scored lines which operation obviates the straining of the fiber of the blanks that cause the flanges 35 to buckle when the staying and paper covering operations are performed to unite the flanges of the boxes and covers at. the corners thereof and to cover the same with paper.

When the flanges are not bent or folded inwardly toward the body portion of the blanks at an angle less-than a right angle with respect to thebody portion thereof or in other words not folded or bent at an acute angle thereto, the boxes and, covers will be imperfectly and irregularly formed because of thestrain or tension of the fibersof the blanks along the scored lines, theresultant being the manufacture of unsightly and defective boxes and covers.

The primary object of the. present invention therefore, consists in providing means for bending or folding in toward the body portion the flanges of the card board blanks Specification of Letters Patent.

ingidrawingin which' Patented J an. 16, 1917.

Application filed January 12, 1916. Serial No. 71,690.

flanges are forced at an acute angle with respect to the body portion thereof or at less than right angle relation thereto, this object or result being accomplished by automatic means.

A further object. is.to provide a hopper for the card board blanks that is located in close proximity to the forming mechanism and providing therefor a mechanism that will feed from the hopper and deliver periodically to the forming mechanism a single andseparate card board blank; said mechanism operating automatically for the purpose intended until the hopper is emptiedof its contents.

Another feature of the feeding mechanism is the positive means employed to return it from the end of its feeding stroke and the yielding means employed for operating the feeding mechanism to feed and deliver the blanks to the forming mechanism thereby providing substantial safety for the operator and against serious breakage of the parts of the machine.

A further object of this invention is to provide a positive means of imparting an upward or idle stroke to a reciprocating rod v carrying the male die which is operable on its working stroke, to act upon work by av yielding means thereby providing substantial safety for the operator against being injured and breakage of the parts of the ma 7 chine, if by inadvertence, accidentor mistake or otherwise part of his person or other obstruction is left or caught between the forming mechanism or dies.

A further novel feature of this invention consists in locating in parallel relation pairs of folding or bendingmembers of a female die, but each pair being arranged or located at different planes with respect. to each other, that is, one pair being set above the other so that the opposite flanges of the card board blanks can be folded or bent in? wardly toward the body portion thereof simultaneously on every working stroke of the reciprocating rod and the right angular related flanges at a different time and successively thereto. These and other objects are attained by the mechanism illustrated in the accompany- .Figure 1 is a front levation of the machine partly in section showing the recip .55 (which-are outlined by scoring) until the fatingpd in its upper position and a card bending members and their supports. Fig.

2 is a side elevation of Fig. 1 showing the right side thereof, also showing the feeding mechanism on its return movement traveling to a position to engage, feed and deliver a blank to the forming mechanism with the reciprocating rod at the end of its working movement. Fig. 3, is a side elevation of Fig. 1 showing the left side thereof, also showing the feeding mechanism about to start to return for another card board blank after delivering a card board blank to the forming: mechanism with the reciprocating rod at the end of its idle stroke. Fig. 4:, is an enlarged view partly in section of the male and female dies, also showing the folding or bending members in normal positions in full lines and the position of one of the folding or bending members in dotted lines performing the. function or operation of folding or bending the flanges of a cover or. a box at an acute angle to the body portion thereof to wit; an an angle less than a right angle thereto. Fig. 5, isan enlarged cross sectional plan view of Fig. 1.

taken on theline w :0. Fig. 6, is an enlarged vertical sectional view of part of the feeding mechanism showing the hopper shoe engaging'a card board blank and a'fragment of one of the ways in which the shoe reciprocates taken on the line 0. O of Fig. 1.

Inthe drawings reference numeral 1 represents a base upon which vertical framemembers 2' and 3 are mounted and preferably-fastened thereto by the bolts 4 and 5.

The bracket brace 6 is rigidly. attached to the frame members 2 and 3 thereby firmly holding the framevmembers in spaced relation to each other. 1 I

'A driving shaft 7 is journaled in the bearings 8 and 9 of the frame. and is pre-.

vented from movement in one lateraldirection by a collar 10. A drivingpulley 11 is mounted on the shaft 7- and securely fastened thereto. -A pinion 12 is also mounted i A' driven"-'shaftf13 is journaled in the bearings 14 and 15, and'an arm 16'is" carried upon and securely fastenedto the shaft 7 being preferably interposed between the bearing 8 and the pulley 11 to prevent lateral'niovement of the shaft 7 inone direcby said shaft 13 having a roller or pin- 17 attached thereto. Ajcar'n 18 is mounted on and rigidly secured to. the driven shaft 13-,

, being preferably interposed; between the bearings 14: and 15. Uponrthe projecting end of the driven shaft 13 "a gear wheel 19 is mounted and rigidly attached thereto meshing with the'pinion 12v through which movement is imparted to the driven shaft Q 13 when thefly wheel 1 1;is rotated;

-A rock shaft 20 isjjournaled in the bear- .ingsy21 and 22 of the frame members, the-q other.

frame members. Oscillating arms 23 and 24 are rigidly fastened to the free ends of the rock shaft and their free ends are provided with slots 25 which slidably engage the journal boxes 26 and 27 for a purpose described hereinafter. i

A lever arm 28 whichis provided with an enlarged bearing face 29 is securely fastened to the rock shaft 20, arranged and so located thereon'that its bearing face 29 will lie in the path of the pin or roller, 17. A rocker 30 is journaled upon the shaft 20 preferably between the bearings 21 and'22 and it is provided with rocker arms. 31 and 32 which project in opposite directions from the axis of the rocker. The arm 31 is provided with standardsj33 to support and journal a roller 34 in the path of and in contact with the face of the cam 18. The opposite end 32 of the rocker is bifurcated to engage a connecting head 35 and it is pivotally connected thereto by a pin 36 which is fitted to suitable apertures in said end of the arm 32 and passes through a slot 37 formed in the con'nectinghead. A

bracket brace 6. The free end of the reoip-- rocating rod 38 projects below the bearing 40 and a male die (or punch) 41 having predetermined portions cut away to form clear- 'ance spaces 42 is attached thereto. 7

A shoe 43 having a shouldered portion ll .is slidingly fittedto reciprocate in the ways 45 and it is provided with depending lugs 46 and 47 which are apertured to receive a cross connecting shaft 48, the free ends of which are journaled in the boxes 26 and 27 which are carried by the oscillating arms 23 and 24 thereby connecting the sliding shoe to said arms for movement unlson.

A lower or female bending die which 18.

adapted to cooperate in conjunction with the punch or male die is connected as follows,lugs 49 are provided on theframe,

members 2 and?) and they are arranged in spaced relation to each other, extending in- Wardly toward andon a plane with" each I In the spaces between the bending or folding members 50 and 51. of novel construction are pivotally j ournaled to the lugs.

The upper portions of the bending members are normally maintained-,upon aplane with v the top of the lugs by the springs 52 which exert,- their pressure to yieldingly hold the bers areprovided with inwardlyextendin'g curved ends of the bending members in contact. with the pins 53. The bending mem ed at less-than a right angular relation to v the vertical sides 55 thereof.-

above describes the first section of tween the portion the pairs of the ing die, the functions thereof in cooperation with the male die being to bend or fold parallel flanges of boxes or covers or in other words two sidesv or end flanges thereof simultaneously. Partition walls or plates 57 and 58 are securely fastened to the frame members 2 and 3 at right angles therewith forming a rectangular hollow frame-work in conjunction with the frame members.

Directly underneath and at a lower lane with respectto the lugs 49 and the ending and folding members 50 and 51, similar or counterpart pairs of lugs 59 and folding or bending members 60 and 61 are provided on the plates 57 and 58 and arranged opposite and on a plane with each other thereby forming the second or successive section completing the female forming and bending die which successively folds or bends the right angularly related flanges of the boxes or covers.

A hopper is constructed of the plates 62, 64 and 63 and an adjustable back stop 65 and it is located in close proximity to the bending and forming mechanism. The front plate 62 is cut awayat 66 and the back stop 65 at 66 to permit the shoe 43 to engage force and feed a single card board blank indicated by 67 or one at a time of a series or plurality of blanks A to the forming and bending mechanism. An adjustable stop pin (38 stops the'movement of the card board blank when it is fed by the feeding mechanism in contact therewith thereby retaining them at a pre-determined position to be acted upon by the forming and bending mechanism.

Reference letter'B represents an opening in the frame members to provide clearance for the shaft 48 when it is reciprocated by the oscillating arms 23 and 24.-

The operation of my invention is as follows: Referring now, to Fig. 3, attention is called to the fact that the reciprocating rod 38 which carries the male die 41 is shown practically at the end of its upper or idle stroke. The high portion being then in contact with the roller 34 which is car ried by the arm 31 of the rocker 30 positively forcing the reciprocating rod to gradually travel to the end of its idle stroke. When however the roller 34 comes in contact with the low portion 0 of the cam spring '69 being relieved of the pressure'beb of the cam and the roller, then exerts its pressure or tension to gradually force the reciprocating rod 38 downward on its-working stroke until 'in" the first instance the male die 41 contacts with the body portion a of the card board blank forcing the flange portions of two sides thereof at right angles to the body portion and as the male die continues on. its working stroke ,(asshown 1n travelfemale forming and bend- 18 the reason mit theinwardly extending portions of the dotted lines in Fig. 4) it presses the card board blanks in contact with foot ledges 54 forcing the folding or bending members 50 and 51 to pivot and fold or bend the flanges f at an acute angle or less than a right angle in relation to the body portion of the card board blank (as shown in Fig. 4 in dotted lines on the left side of the figure) thereby breaking the fiber of the card board blank along the scored lines 9 and relieving it of all strain; so that'when it is desired to stay the corners the flanges will be stayed in exact right angular relation to the body portion and the buckling of the flanges prevented between the corners of the boxes or covers. Then this operation is completed by the first section of the female die by the pairs of bending members thereof on the flanges that are parallel to each other the male die continues further upon its working stroke until it reaches the second section and pair of folding or bending members which are located at a diflerent plane underneath and at right angles to the first section and pair and the operation of bending or folding the flanges is again repeated as describedabove thereby completing the bending or folding of the flanges on all sides of the box or cover upon every working stroke of the male die. The male die continues its travel until it reaches the end of its working stroke and the box cover or box in the meantime drops down into a suitable hopper underneath the machine being released from the male die by its own gravity, as the fibers along the scored lines of the. flanges are broken relieving them of ciprocating rod 38 which carries the male die 41. The folding or bending members are automatically returned to their normal positions after the maledie cooperates with the female die and the folding or bending members to perform their functions as above described, by the tension of coil springs the curved end of the folding or. bendin -which, exert their pressure. to'normally hold members in contact with the pins 53.

The reciprocating rod 38 is permitted to be operated'in a. direct vertical line without strain or excessive friction by reason of the I slot 37 which allows for the movement of the pin 36 back and forth therein and compensates for the rocking movement of the arm 32. The-male die is permitted to telescope with the sections of the female die by of the clearance spaces 42 which perf'olding or bending members to clear the male die as shown in Fig. 5.

glffoperation of, the feeding mechanism is follows: Referringnow to Fig.3, when the reciprocating rod which carries the male die] 41 on its working stroke forces it to contact with and press against the body portion 6 of the blank with the face 29 of the lever arm 28 forcing it to rock the rock shaft 20, therebyoscillating the arms 23 and 24 forcing the shoe 43 to commence and travel to its. rearward position; so that the next succeeding card board blank can drop by gravity and engage the shoulder 44 thereof, preparatory to being fed to the'formin mechanism. y

en the pin 1 is'released from contact or pressure against the face 29of the lever arm 28, the tension of the spring 70 then exerts its pressure or tension to force the shoe to travel forward to feed the blank and deliver it between the male and female dies, the same being stopped at a pre-determined position by contact with the stop pin 68 preparatory to being acted upon as for the purpose described hereinbefore. A spring 70 is attached to=an arm 71 provided on the oscillating"ar'm 24 on one end and its opposite end is attached to the base 1 of the machine. A spring 69is attached to the arm 32 of the rocker and to the brace bracket 6 of the machine. v

Attention is called to the fact that the cam 18 is timed to contact with the roller 34, so-

as to force the reciprocating rod 38 to travel upon its idle stroke and as ther'eciprocating rod carries the male die upward and beyond 23 and 24 are forced bythe pin 17 and arm 28 to oscillate and impart a. forward move? ment to the shoe feeding and delivering a card board blank between the dies as stated.

When the male die contacts with the card board blank in its 1 cillating arms 23 and 24 at about the same time start to move mistake or otherwise the shoe rearwardly preparatory to engaging and feeding another blankto the forming mechanism. I

The above described operations take place continuously until all of the series or plurality of blanks Awhich were placed in the Q hopper are fed therefrom between the dies,

at which time the operator again fills the blanks to be opabove. The slots 27 formed in the ends of the oscillating arms 23 and 24 permitthe ends. thereof to slide over the boxes 26 and 27 to accommodate themselves to the oscillating movement thereof without affecting thefcross shaft 48.-

Attention is called to,the fact that the reciprocating rod 38 is actuated to move downward upon its working stroke by the spring 69 therefore, if by accident, inadvertence,

tors person; a tool or any ot er device or thing should be left or inserte the pin 17 is then in contact downward stroke the osblanks for paperboxes, means to impart a working movement thereany part of the operabetween the dies; that the injury to the person or machine will only vbe in a slight degree, as the downward stroke of the male die is not positive, the working pressure thereof'equaling only the tension of the spring 69. It will be further noted that the operation of the shoe of the feeding mechanism is actuated in its forward travel by the tension of the spring 70 so that in the event of any obstruction being placed or left between it and any part of the machine, it would only exert pressure equal to the tension of the sprin which would be insuflicient to seriously in ure the person of the operator or cause breakage of any part of the machine.

The features of driving the reciprocating rod and the sliding mechanism by yielding meanson their working movements and returning them upon their idle movements by positive means affords substantial safety, the inachine in case of any obstruction being interposed inadvertently or by accident between the work erence to each other can be varied by adjusting the relation of the arm 28 with reference to "the pin 17 and the cam 18 with reference to the roller 34.

The combination of'the elements and conshoe of the feedingto the operator and.

structlon of the parts above described can be varied more or less without departing from the spirit .ofthe present invention, therefore the specific means 's'hown'on the drawings are only shown as being the preferred comthe plane of the shoe 43, the oscillatmg arms bination of the elements'and their construction without any intention of limiting this invention to the precise details thereof.

What is claimed is: v

1. In amachine for bending and forming blanks, a male die, yielding means to impart a wor to impart anidle movement thereto, a pair of female dies spaced'apart from each other horizontally, a second pair of female dles spaced apart from each other horizontally and also spaced apart vertically from the first mentioned pair of female dies; said female diesbeing operable by the male die to bend and form said blanks at an angle greater than a right angle.

2. In a machine for bending and forming a male die, yielding to, positive means to impart an idle movement thereto, a female die which is adapted to be operated by the male die to bend and form said blanks, first at right angles to the body portion and then at an acute angle thereto.

3. In a machine for bending and forming blanks for paper boxes, a male die, yielding means to impart a working movement thereto, positive means to impart an idle movement-thereto, a female die which is adapted klng movement thereto, positive means to be operated by the male die to bend and form said blanks, first at right angles to the body portion and then at an acute angle thereto and automatic means to feed and deliver the blanks between the dies.

4. In a machine for forming and bending blanks for making boxes and covers for same, a male die having clearance spaces formed therein, a female die made in two sections which are arranged at different planes with respect to each other, combined positive and yielding means for reciprocating the male die and forcing it to telescope with and directly operate the sections of the female die.

5. In a machine for forming and bending blanks for making boxesand covers for same, a male die having clearance spaces formed therein, a female die made in two sections which are arranged at diflerent planes with respect to each other, combined positive and yielding means for reciprocating the male die and forcing it to telescope with and directly operate the sections of the female die and automatic means for periodigally delivering a single blank between the 6. In a machine for bending the flanges of blanks preparatory to making paper boxes and covers therefrom, a reciprocating male die, a female die constructed in a plurality of sections and arranged one above the other,

bending memberspivotally mounted on the sections to cooperate therewith, said members being operated by the male die to fold the flanges of the blank at less than a right angle to the body portion.

ment of the material bending the flanges of blanks preparatory to making paper boxes and covers therefrom, a reciprocating male die, a female die constructed in a plurality of sections and arranged one above the other, bending members pivotally mounted'on the sections to cooperate therewith, said mem- 7. In a machine. for

"bers being operated by the male die to. fold the flanges of the blank at less than a right angle to the body, portion and means yieldingly operated upon its forward or delivering movement and positively operated upon its idle or rearward movement to feed a. single blank between the dies.

8. A pivoted folding member for a machine adapted for" use in the manufacture of paper boxes and covers provided with material engaging portions disposed at less than a right-angle to each other, the movepast said member swinging the latter on its pivot to fold the adjacent portions ofthe material on lines having an angular relation less than a right angle.

9. A pivoted folding member for a machine adapted for use in'the manufacture ofpaper boxes and .covers p'rovided'with a portion which is normally maintained in a vercurved end portions,

tical position having a part angularly related thereto and a curved top, a pin to contact with the curved top and yielding means to automatically retain with the curved top in engagement with the pin.

blanks for the manufacture of paper boxes and covers, a reciprocating punch, a die, a pair of cooperating bending members pivoted to said die and operated by the punch for bending two sides or flanges of the paper boxes or covers simultaneously, and another pair of bending members spaced therefrom and arranged at right angles to the first mentioned pair and operated. by the punch to fold two sides or flanges of the paper boxes or covers simultaneously, thereby completing the bending operations on the flanges of the boxes and covers preparatory to staying the corners thereof.

lluIn a machine for preparing scored blanks for the manufacture of paper boxes in combination, cooperative pressure and bending elements, said pressure elements directly operating the bending elements for bending flanges from the body portion along the scored lines at an acute angle thereto, and means to deliver the blanks between the pressure elements.

12. In a machine for preparing scored blanks, for the manufacture of paper boxes in combination, cooperative pressure and bending elements, said pressure elements directly operating the bending elements for bending flanges from the body portion along the scored lines at an acute angle thereto, and means to deliver the blanks between the pressure elements, and automatic combined yielding and non-yielding means to actuate the bending and delivering means for the.

purpose intended.

13. A pivoted folding a machine for bending or folding the flanges of a blank used in the manufacture of paper boxes having a body portion angular related projecting portions disposed at less than a right angle to each other and one of said portions being curved at its free end, a pin adapted to contact'with the means to yieldingly maintain the curved end portions in contact with the pin and means to actuate the folding member to engage and portions of the materialinto angularly re' lated parts to correspond with the aifgular relation of the'portions of said member.

a 14. A machine for and covers,- comprising pivoted bending elements, each having material engaging surfaces arranged at an angle less than a right angle, means for feeding an approximately flat blankto a position above said bending members, and means 10. A machine for bendingand forming for forcing said blank the folding member member for use in;

provided with bend adjacent I,

forming and bending blanks for the manufacture of paper boxes.

into contact with and bers, said latter means operating the bending members on their pivots to bend said portions of the blank at an angle to the main portion of such blank corresponding to the angular relation of the portions of the Y bending members.

15. A machine for forming and bending blanks comprising opposed pairs of pivotally mounted bending members arranged in different horizontal planes, means for feeding an approximately flat blank to and above the upper bending members, and a 1 plunger engaging the blank and forcing it 15 mto contact with and past the respective sets of bending members, the plunger in its movement directly operating the bending members to. cause the latter to bend the respective side portions of the blank at an angle less than a right angle with respect to the main portion of such blank.

16. A machine for forming and bending past the bending memblanks comprising opposed pairs of pivotally mounted bending members arranged in diflerent horizontal planes, means for feeding an approximately flat blank to and above the upper bending members, and a plunger engaging the blank and forcing it into contact with and past the respective sets of bending members, the plunger in its movement directly operating the bending members to cause the latter to bend the respective side. portions of. the blank at an angle less than a right angle with respect to the main portion of such blank, the side edges of the plunger being formed to permit the bending operation of the bending members.

In testimony whereof I aflix in presence of two witnesses.

.AGUSTUS FREDERICK BROOKS.

my signature Witnesses:

F. A. Nnvnn, JACOB LUSTIG. 

